Hinge pin spinning machine



Feb. 6, 1951 E. M. HUNT 2,540,117

HINGE PIN SPINNING MACHINE Ffi led Nov. 28, 1945 3 Sheets-Sheet 1 mvzm'o EVERETT M- HUNT E. M. HUNT 2,540,117

Feb. 6, 1951 HINGE PIN SPINNING MACHINE 3 Sheets-Sheet 2 Filed Nov. 28, 1945 I l m l m-- NVENTOR EVERETT M. HUNT I BYQW ATTORNEY HINGE PIN SPINNING MACHINE Filed Nov. 28, 1945 3 Sheets-Sheet 3 Ha WI no 88 A I.

i I-W I I n2 FIG. 4.

2 FIG. 5. f 12 34 33 INVENTOR EVERETT M. HUNT FIG. IO. FIG. 1|. BXL

ATTORNEY Patented Feb. 6, 1 51 UNITED STATES PATENT OFFICE- 2,540,117 IHNGE PIN SPINNING MACHINE Everett M. Hunt, Portsmouth, N. H.

Application November 28, 1945, Serial No. 631,461"

3 Claims. (Cl. '7.896)

(Granted wider the act of March 3, v1883, as amended April 30, 1928; 370 '0. 'G. 757) This invention relates to a machine for heading pintles and the like and more particularly to a machine for heading hinge pintles.

It is an object of the present invention to provide a machine for, feeding hinges one by one, in

rapid succession, from :a supply hopper to a posiends of the pin-tle in .-a smooth, quick and efficient manner.

.A further object of the invention is to provide a machine of this character which is simple in design and construction, composed of few parts hinges of varying lengths, and reliably operative to perform pin-tle heading operations in mass production.

With the above and other objects and features in view, the invention will now be described with reference to the accompanying drawings which illustrate a preferred embodiment of the invention and will be pointed out in the claims.

In the drawings:

Fig. 1 is a front elevation of the hinge pintle heading machine;

Fig. .2 is a sectional elevation thereof taken along the lineIL-II of Fig. 1;

Fig. '3 is an enlarged front elevation, partly in section, of one of the pintle heading units shown in Fig. 1,;

Fig. 4 is a detailed plan view of the pintle heading tools, the latter being shown in the positions that they occupy when the heads are being spun v on the pintle;

Fig. 5 is a detailed sectional View taken along the line VV of Fig. 2 and showing certain partsv of the feed mechanism;

Figs. 6 and 7 are diagrammatic views in side elevation of parts of the feed mechanism, at different stages of their operations;

Fig. 8 is a detailed sectional view taken along the line v1.u v111 of Fi 3;

Fig. 9 is a detailed sectional plan view taken along the line 'IXIX of Fig. 2: v I

Fig. 10 is a plan view of a hinge before the 'pintle heading operation has "been performed thereon; and i r "Fig. 11 is a view similar to Fig. 10 but after the posite ends of the pintle l6 extend a slight distance beyond the ends of the hinge leaves 13, that these ends are flat, and that they are of the same diameter as the body of the pintlc. It is in this form that the hinges are placed 'inthe machine. Fig. 11 shows the opposite ends of the pintle It with enlarged rounded heads, as formed "by the machine, whereby the leaves 13 are held pivoted together in assembled relation.

The machine comprises a frame i3 having a bed or top 28 and a lengthwise extending crossstrut 22 upon which various units of the machine that are readily adjustable to accommodate are mounted. The feed mechanism includes an upper disc 24 and a lower disc 25. The disc 2:! is supported on a shaft 21 rotatably journaled at its opposite ends in bearings 28 that are adjustab7e scriews 3i} threaded in upstanding brackets 32 fixed to the top 28. The disc is similarly supported on a shaft 33 rotatably journaled at its opposite ends in bearings such as 3% that are adjustable by screws such as 36 threadedin depending brackets such as 38 secured to the underside of the table top 28. The disc 25 lies in vernism and receiving the hinges l2.

tical alignment with the disc 24. A rim 13, of rubber or other pliant material, is fixed on the periphery of the disc 24; The screws 33 and 33 are so adjusted with respect to their bearings and discs that the rim to bears with frictional contact against the periphery of the disc 26, the upper portion of the latter projecting through a transversely extending slot 42 in the table top 2c. Hence, when the disc 26 is driven in rotation, the disc 24 will be driven thereby.

' .A series of equally spaced notches 44 provided in the periphery of the disc 26 serve the dual purpose of cooperating with the feed drive mecha- The width of the slots M is just sufiicient to receive the bearings M of the hinges 12 with slight clearance. The hinges l2 are fed by gravity into the notches 44 from an angularly disposed supply hopper 45 Fig 2) secured on the top 253. The hinges are stacked in the hopper 48, one upon another, with their bearings lfi facing downwardly as shown in 2. The outwardly projecting ends of the pintles it are engaged on their opposite sides by vertically spaced guiding members 48 (Fig. 9) secured internally of, and adjacent to, the sides of the hopper. The spacing between the inner ends of the members 48 accommodates the pintles [6 with just sufficient sliding clearance so that the hinges are kept in alignment centrally of the hopper, ready iorieeding movement therefrom into "the notches '44. The back of the hopper islcut -'away to provide aithroat'fiil which permits only one h'inge'i z at a time to he removed from beneath the eta-alias the disc this indexed, step by step, to firing thenotches :54, successively one afteranather, iinto'alignment withthe bearings 1410f the I j hinges.

suitable means may: be employed for advancing the disc 25. .Thczmeans herein shown,

comprises a cylinder-piston, fluid operated, power unit 52 pivotally mounted at 53 to the strut 22. The cylinder of this unit has fluid line connections indicated at 54 and 56. These two lines connect to a control valve 58 which is, in turn, suitably connected to a source of fluid under pressure. A yoke 69 (Figs. 5 and 6) is pivoted at 62 to the upper end of the rod 64 of the piston. The yoke 63 is also pivoted at 66 to the forward ends of a pair of arms 68. Arms 68 lie on opposite sides of disc 26, and each arm is mounted for free rotary movement on shaft 33. A pin I8 is connected across the yoke 60.

By shifting the valve 58 to one of two positions, fluid passes through the line 56 and drives the piston of the unit 52 upwardly. By shifting the valve 58 to its other position, fluid passes through the line 54 and drives the piston downwardly. During the first increment of movement of the rod 64 upwardly, corresponding pivotal movement of the yoke 60 from the position shown in Fig. 6, moves the pin Ii! into engagement with one of the notches 44. As the rod 64 continues its upward movement, to the position shown in Fig. 2, the disc 26 is rotated an amount corresponding to the distance between he notches 44. A stop I2 depending from the underside of the top 28 is adjusted to engage one of the arms 68 and thereby limit the upward stroke of the rod 64 and the pin 'I'il to insure proper, central registration of a notch 44 beneath the supply hopper 46.

When the valve 58 is operated to move the piston rod 64 downwardly, from the position shown in Fig. 2, back to the normal position shown in Fig. 6, the pin I6 simply rocks out of engagement with the notch 44 with which it was last engaged, there being sufiicient friction between the discs 24 and 26 to hold them stationary during the disengaging movement.

As the disc 26 rotates step by step in feeding direction, the hinges I2 are fed, one by one, from the supply hopper 46 to a pintle heading station indicated at I4 in Fig. 2. A hinge I2 that has been advanced to the pintle heading station is engaged by the rim 48. The rim yieldingly admits the hinge butsecurely presses against its upper surface so that the hinge is secured in its corresponding notch 44 ready for the pintle heading operation to be performed by the heading mechanism now to be described.

The heading mechanism comprises two oppositely disposed motors I6 and '58 mounted adjacent to the right and left ends of the table top 28. The drive end of each motor shaft is connected, through conventional mechanical filters 89 and 82, to horizontally disposed square shafts 84 and 86, respectively. The free ends of the shafts 84 and 86 slidingly engage within square openings provided in sleeves 88 and 90. The sleeves are mounted for sliding and rotary movement in horizontall disposed bearings 92 and 9.4. The bearings 92 and 84 are formed on upstanding brackets 96 and 68 adjustably mounted on the top 2:] by headed screws I80 and I82 passing upwardly through slots, such as I84, in the table top 28.

The inner ends of sleeves 88 and 90 have secured thereon, pintle heading tools I86 and I08. The tools are identical in construction and each comprises a pair of discs III] disposed in angular relation with respect to each other in inclined slots II 2, the discs being mounted for rotation in the slots on a pin II4 fixed in the tool and passing through the slots. The periphcues of the discs are curved so that at their contiguous forward ends they form a concave surface which serves to spin a rounded end on the pintle I 6 when rotatively brought into engagement therewith. The tools I86 and I88 are moved into and out of engagement with the opposite ends of the pintle I6 by arms H6 and Ill pivoted as at II8 to the brackets 96 and 98. The upper end of each arm has a yoke I28 (Fig. 8) pivoted at I22 to a ring I24 rotatably mounted on the outer end of each sleeve 88 and 96. By this construction, the sleeves may be slid toward or away from the ends of the hinge pintle I6 while, at the same time, the sleeves are rotated in opposite directions by the motors "I6 and I8, respectively. The lower ends of the arms II'. and I I8 extend downwardly through the openings I84 in the table top.

The outer ends of piston rods I26 and I21 of cylinder-piston, power units I28 and I38, similar to the unit 52, are pivotally connected to the lower ends of the arms H6 and H1. The outer ends of the units I28 and I38 are pivoted at I32 and I34, respectively, to projections depending from adjustable channel strips 536 and I38. The strips I36 and I38 are secured to the underside of the table top 28 by screws such as I40, passing through elongamd slots provided centrally of the strips, the screws being threaded into the top 26 The outer ends of the strips I36 and I38 have lugs i44 extending upwardly into slots such as I46 provided in the top 20. Adjusting screws I48 and I68 threaded in the top 28 and rotatably journaled in the lugs I44 provide a means for adjusting the strips I36 and I38 and their units I28 and I38 longitudinally of the top 20. Following such adjustment the units are held in their adjusted position by taking up upon the screws I 48. By means of the adjustment just described and, the adjustment afforded by brackets 92 and 94; the length of stroke of the heading tools I86 and I88, from their normal position shown in Fig. 1 to their pintle endengaging positions (Figs. 3 and 4) may be readily adjusted to accommodate hinge pintles I 5 of different lengths.

The units I28 and I38 each have suitable dual, fluid line connections to a control valve I52, similar to the control valve 58, which is, in turn, connected with a source of fluid under pressure. By hifting the valve I52 to one of two positions the piston rods I26 and I2! are thrust outwardly and, through the connections above described, the head-spinning tools I66 and IE8 are withdrawn away from the opposite ends of the pintle I6. By shifting the valve I52 to its other position, the rods I26 and I2! are retracted within the cylinders and the arms I I6 and II! are rocked on their pivots to thrust simultaneously, the tools I86 and IE8 into spinning contact with the opposite ends of the hinge pintle I6.

In operating the machine, with the motors I6 and 78 running. the valve 58 is shifted to advance a hinge from hopper 46 to the heading station I4. The valve 58 is then shifted to restore the pin 10 to normal position ready for the next operation. Next, the valve I52 is shifted to cause the tools to engage the opposite ends of the pintle and perform the spinning operation and, following this, the valve is shifted to retract the heading tools from the ends of the hinge pintle. The valve 5-8 is again operated to advance the next succeeding hinge I2 into the heading position I4 where the heading operation is performed as described, and so on.,

Referring now to Fig. 2, an angularly disposed, depending chute I54 is secured to the underside of the table top 29 and has its lower end entering into another angularly disposed chute I56 mounted on the machine frame and having its lower end located above a receptacle I51. The bottom of the chute l5 l has a slightly inturned lip I58 at its upper end. The lip 158 is slotted centrally to embrace the opposite sides of the disc 26 adjacent to its periphery. As the disc advances, step by step, the completed hinges are engaged by the lip i58 one after another, and thus removed from the notches 44 whereupon,

. they descend from the chute i5 3 into the chute I56 and thence into the receptacle i571.

The invention described herein may be manufactured and used by or for the Government of the United States of America for government purposes without the payment of any royalty thereon or therefor.

Having described the invention what is claimed as novel and desired to be protected by Letters Patent of the United States is:

1. A feeding mechanism for successively positioning a series of assembled hinges in work engaging relation with means for spinning heads on the ends of pintles extending therefrom, said feeding mechanism comprising, a disc rotatable about a horizontal axis having substantially rectangular work receiving notches equally spaced about the periphery thereof, power driven means cooperating with said work receiving notches for advancing said disc in steps equal to the spacing between successive notches, said driving means including a ratchet adapted to engage said notches and driven by a rod having a stroke of a length sufficient to advance said disc one of the aforesaid steps and on the return stroke falling back to engage the .next successive notch in said disc, said disc being of such thickness that the hinges carried within said notches extend beyond the opposite faces of said disc, the central portion of the hinge containing the pintle being received in said notches and the leaves thereof lying along the periphery of the disc, the aforesaid spacing of the notches being sufiicient to provide a space between successive hinges along the periphery of said disc, a resilient disc engaging said driven disc at the uppermost portion of said driven disc thereby to rigidly maintain said hinge in position in said notch and to maintain said driven disc in a condition of rest, said hinge while engaged by said resilient disc being positioned in the aforementioned work engaging relation with respect to said spinning means, the hinges falling from said disc feeding mechanism upon further rotation of said hinge beyond said position of engagement with said resilient disc.

2. A feeding mechanism for successively positioning a series of assembled hinges in work engaging relation with means for spinning heads on the ends of pintles extending therefrom, said feeding mechanism comprising, a disc rotatable about a horizontal axis having substantially rectangular notches equally spaced about the periphery thereof, power driven means cooperating with said work receiving notches for advancing said disc'in steps equal to the spacing between successive notches, said driving means including a ratchet adapted to engage said notches and driven by a rod having a stroke of a length "suflicient to advance said disc one of the aforesaid disc adapted to drop single assembled hinges centrally in successive Work receiving notches, said disc being of such thickness that the hinges extend beyond the opposite faces of said disc, the central portion of the hinge containing the pintle being received in said notches and the leaves thereof lying along the periphery of the disc, the aforesaid spacing of the notches being suflicient to providea space between successive hinges along the periphery of said disc, a resilient disc engaging said driven disc at the uppermost portion of said driven disc thereby to rigidly maintain said hinge in position in said notch and to maintain said driven disc in a condition of rest, said hinge while engaged by said resilient disc being positioned in the aforementioned work engaging relation with respect to said spinning means, the hinges falling from said disc feeding mechanism upon further rotation of said hinge beyond said position of engagement with said resilient disc.

3. A mechanism for successively positioning and intermittently holding hinges in a predetermined work engaging position, said mechanism comprising a first disc rotatable about a first horizontal axis having substantially rectangular work receiving notches equally spaced about the periphery thereof, a second disc having a resilient rim thereon rotatable about a second horizontal axis parallel to said first axis and contacting said first disc at its uppermost portion, the point of contact of said first and second discs defining said work engaging position, and power driven means cooperating with said work receiving notches for advancing said first disc in steps equal to the spacing between successive notches, said driving means including a ratchet adapted to engage said notches and driven by a rod having a stroke of a length sufiicient to advance said first disc one of the aforesaid steps and on the return stroke falling back to engage the next successivenotch in said first disc, said disc being of such thickness that the hinges carried within said notches extend beyond the opposite faces of said first disc, the central portion of the hinge containing the pintle being received in said notches and the leaves of said hinge lying along the periphery of said first disc. said second disc rigidly maintaining said hinge in position within said notch and periodically maintaining said first disc in a condition of rest at the above-defined work engaging position, the hinges falling from said mechanism upon further rotation of said hinge beyond said Work engaging position.

EVERETT M. HUNT.

REFERENCES CITED The following references are of record in the file of this patent:

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